The primary goal of this proposal is to study the outcome of patients with recurrent Clostridium Difficile Infection (CDI) treated with frozen Fecal Microbiota Transplantation (FMT) in an open-labelled controlled trial. The specific objectives are to evaluate the safety of FMT and to determine the clinical response, treatment failure and relapse rate in patients treated with frozen-and-thawed FMT; to assess the functional health and well-being of patients in each arm using the validated tool, and to determine the feasibility of providing standardized FMT in multiple centres across Canada, including community hospitals. The metagenomics will also be conducted from the stool samples collected from select patients from each arm: pre and post treatment and the matching donors. The metagenomics data will be used to determine the bacteria which may have contributed to the cure of CDI.